FOR REFERENCE ONLY
Bearing No. 31328JR
Specification data (main dimensions, etc.)
| d(mm) | 140 |
|---|---|
| D(mm) | 300 |
| T(mm) | 77 |
| B(mm) | 70 |
| C(mm) | 47 |
| r(min.)(mm) | 5 |
| r1(min.)(mm) | 4 |
| Basic load ratings : Cr(kN) | 841 |
| Basic load ratings : C0r(kN) | 865 |
| Fatigue load limit : Cu(kN) | 99.1 |
| Limiting speeds(Grease lub.)(min-1) | 1100 |
| Limiting speeds(Oil lub.)(min-1) | 1500 |
| Load center spread : a(mm) | 93.8 |
| Constant e | 0.83 |
| Axial load factors : Y1 | 0.73 |
| Axial load factors : Y0 | 0.40 |
Mounting dimensions,weight (reference)
| da(min.)(mm) | 162 mm |
|---|---|
| db(max.)(mm) | 167 mm |
| Da(max.)(mm) | 282 mm |
| da(min.)(mm) | 254 mm |
| db(min.)(mm) | 280 mm |
| Sa(min.)(mm) | 8 mm |
| Sb(min.)(mm) | 26 mm |
| ra(max.)(mm) | 4 mm |
| rb(max.)(mm) | 3 mm |
| Mass(Refer.)(kg) | 23.3 kg |
2026/07/28